Inhaler for chloroform



(No Model.) 7

J. W. BATTERSHALL.

INHALER FOR GHLORQFORM, Gas. No. 379,042. Patented Mar. 6, 1888.

UN TED STATES PATENT OFFICE.

JOSEPH W. BATTERSHALL, OF ATTLEBOROUGH, MASSACHUSETTS.

INHALESR FOR CHLOROFORM, aw.

SPECIFICATION forming part of Letters Patent No. 379,042, dated March 6, 1888.

Application filed September 29, 1886. Serial No. 214,899, I (No model.)

To all whom it may concern: Be it known that I, JosEPH W. BATTER- SHALL, of Attleborough, in the county of Bristol and State of Massachusetts, have invented certain new and'useful Improvements in Inhalers and Respirators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings,

forming part of this specification.

This invention relates to what are known as inhalers and respirators, or devices for administering anresthetics.

In administering anzesthetics it is very desirable to employ apparatus whereby the anaesthetic may be safely and economically given to the patient.

One object of my invention is to provide an inhaler and respirator whereby the anaesthetic remaining in the same when the device is not in use may be well protected against evaporation.

Another object of my invention is to provide means for regulating the feeding of the air into the respirator or inhaler.

Another object of my invention is to provide means for regulating the introduction of air into the device at a point between the absorbent and the face-hood for diluting the anaesthetic.

Another object of my invention is to prevent the adniission of the exhaled fluid into the receptacle containing the anaesthetic.

Another object of my invention is to provide an escape for the exhaled fluid from the face-hood.

Another object of my invention is to adapt the inhaler or respirator for use in administering nitrous-oxide and other gases.

To the above purposes my invention consists, essentially, in the certain combinations set forth at the end of this specification, and which comprise the following mechanical features, namely: a receptacle or cylinder having feed and delivery openings for the fluids and provided with an opening for supplying the receptacle; the covers for said openings; the means for regulating the influx of air through'the feed-opening; a face-hood and a tube for connecting the same with the delivery-opening of said receptacle; the means for regulating the admission of air at a point intermediate the receptacle and attached facehood; the adjustable escape in the face-hood for the escapement of the exhaled fluid, and the coupling for the feedtube of the receptacle.

In order that my invention may be fully understood,I have illustrated in the accompanying drawings and will proceed to describe the best form thereof so far devised by me, with the knowledge that such form may be variously modified without making asubstantial departure from the spirit of the invention.

In the said drawings, Figure 1 represents a side view of the receptacle or cylinder for the absorbent. The receptacle is shown with the end cap and the respective covers of the feedtube, the delivery-tube, and the supply-opening, respectively, as opened. Fig. 2 represents a longitudinal sectional view of the coupling attachment for the feedtube. Fig. 3 repsents a side view of the face-hood with its attaching-tube and escape.

. In the said drawings like letters of reference designate corresponding parts throughout.

Referring to the drawings, the letter A designates a cylindrical receptacle for containing the absorbent-such as cotton or spongeto hold the anaesthetic liquid which may be supplied to the receptacle by means of the supplyopening F, formed in the side of the receptacle and provided with a cover or lid, G, for securely closing the same.

The end cap, M, is constructed to fit tightly into the end of the cylinder A, and is provided with the feed-tube J, which is made with the slot E in the side. The cover H is open at one end and has the slot K formed in the side. The cover is adapted to fit snugly over the feed-tube, and the slots K and E are designed to register, so that when the cover H is closed on the end of the feed-tube the cover may be turned, so as to regulate the influx of fresh air through the feed-tube into the receptacle.

The delivery-tube 0 opens into the end of the receptacle A, .and is provided with a slot, D, and also with the valve L, which is an ranged over the opening of the tube 0, and is constructed so as to open upon inhalation and close upon exhalation, as hereinafter described.

The face-hood R is a bag-like device, made, preferably, of rubber, and the outer end thereof is formed large and flaring, while the inner end is formed quite small, and is secured in the end of the bent connecting-tube S, which is formed with a slot, T, which is constructed to register with the slot D, formed in the delivery-tube 0, when the tube S is placed over the same in connecting the face-hood with thetreceptaele.

In order to permit the exhaled fluid to escape from the face-hood R, I have provided the adjustable escape, which consists in the tubular piece P, inserted in the hood and provided with a slot which is not visible in the closed condition in which it is shown, the slot, however, being similar to the slot E, formed in the feed-tube J in Fig. 1. The cover 0 is made with the slot Q, which may register with the slot formed in the tubular piece P when the cover is closed on the latter. By turning the cover P on the piece 0 the opening of the escape may be regulated as desired.

In Fig. 2 the coupling N is a section of tube which is adapted to fit over the feed-tube J and to close the slot E of the feed-tube in order to allow a gas-such as nitrous oxide-to be introduced into the receptacle by means of a rubber tubing fitted over the outer end of the coupling N when the latter is attached to the feed-tube, as described.

The cover I, Fig. 1, is a cupshaped cover, which is intended to be placed over the deliverytube G and its slot D, so as to close the same against leakage of the anaesthetic fluid when the receptacle is notin use. The feed tube is closed by the cover H when the cover is placed over the tube and turned so as not to allow the respective slots to register. The opening F may be tightly closed by the cover G. By virtue of sealing the receptacle securely against evaporation of any antesthetic which may remain after using the inhaler the fluid may be preserved for future use.

From the foregoing description the operation of the inhaler will be readily understood. The ether or chloroform is introduced through the supply-opening F, which may then be closed, the end cap, M, having been previously closed up. The connecting pipe or tub ing S is coupled onto the delivery-tube O, and the covers II and P, respectively, having been properly adjusted, the patient places the facchood R over his nose and mouth and presses the hood closely to the face.

At each inhalation the valve L is opened and the fresh air is drawn into the feed-tube through the receptacle A, when it becomes mixed with the anaesthetic. The fluid is then inhaled by the patient and again exhaled, whereupon the valve L closes, so as to cause the exhaled fluid to pass out of the hood by the escape.

The device may be used for administering an admixture of chloroform, ether, or nitrous oxide by placing the ether or chloroform in the receptacle and connecting the gas-coupling N, when placed over the feed-tube J, with the nitrous-oxide supply.

By virtue of the valve L the anaesthetic contained in the receptacle A is kept from contamination by the exhaled fluid, and this arrangement is productive of great economy.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination, as hereinbefore set forth, with the cylinder or receptacle A for the absorbent, of the end cap, M, provided with the slotted feed-tube J, the slotted cover H for the feed-tube, the delivery-tube 0, provided with the valve L, and the face-hood R, provided with the connecting-tube S, substantially as herein described.

2. The combination, as hereinbefore set forth, with the receptacle A, provided with the feed-tube J, and the delivery-tube 0, provided with the slot D, ofthe face-hood It, provided with the connecting-tube S, formed with the slot T, substantially as herein described.

3. The combination, as hereinbefore set forth, with the receptacle A, of the end cap, M, provided with the feed-tube J, formed with the slot E, the cover H, formed with the slot K for said feed-tube, the supply-tube F, provided with the cover G, and the delivery-tube 0, provided with the cover I, substantially as herein described.

4c. The combination, as hereinbefore set forth, with the receptacle A, provided with the feed-tube J, and the delivery-tube O, of the gas-coupling N, adapted to fit over the feed-tube, substantially as herein described.

J OSEPII \V. BATTERSI'IALL.

Witnesses:

FRANK I. Blnioocit,

JAs. H. S'rURDY, JOHN T. Barns. 

